package org.yeshi.utils.sms;
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/**
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* @author hxh
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* @title: VerifyCodeFactory
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* @description: 验证码工厂
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* @date 2021/11/15 18:47
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*/
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public class VerifyCodeFactory {
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final static String NUMBERS = "0123456789";
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final static String NUMBERS_UPPER_CASE = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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final static String UPPER_CASE = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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final static String NUMBERS_LOWER_CASE = "0123456789abcdefghijklmnopqrstuvwxyz";
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final static String LOWER_CASE = "abcdefghijklmnopqrstuvwxyz";
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/**
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* @return java.lang.String
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* @author hxh
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* @description 纯数字验证码
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* @date 18:56 2021/11/15
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* @param: length
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**/
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public static String createNumber(int length) {
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return createCode(length, NUMBERS);
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}
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/**
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* @return java.lang.String
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* @author hxh
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* @description 数字大写字母混合验证码
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* @date 18:56 2021/11/15
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* @param: length
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**/
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public static String createNumberAndUpperCase(int length) {
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return createCode(length, NUMBERS_UPPER_CASE);
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}
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/**
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* @return java.lang.String
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* @author hxh
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* @description 数字小写字母混合验证码
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* @date 18:56 2021/11/15
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* @param: length
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**/
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public static String createNumberAndLowerCase(int length) {
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return createCode(length, NUMBERS_LOWER_CASE);
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}
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/**
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* @return java.lang.String
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* @author hxh
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* @description 纯大写字母混合验证码
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* @date 18:56 2021/11/15
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* @param: length
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**/
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public static String createUpperCase(int length) {
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return createCode(length, UPPER_CASE);
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}
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/**
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* @return java.lang.String
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* @author hxh
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* @description 纯小写字母混合验证码
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* @date 18:56 2021/11/15
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* @param: length
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**/
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public static String createLowerCase(int length) {
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return createCode(length, LOWER_CASE);
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}
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private static String createCode(int length, String source) {
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StringBuffer buffer = new StringBuffer();
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for (int i = 0; i < length; i++) {
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buffer.append(source.charAt((int) (Math.random() * source.length())));
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}
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return buffer.toString();
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}
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}
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